Home / 113,121.28-156,275.04-74,450.28

Finding the Fourth Proportional to 113,121.28, 156,275.04 and 74,450.28

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Solution

The fourth proportional to 113,121.28, 156,275.04 and 74,450.28 is: 102,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,121.28 : 156,275.04 = 74,450.28 : x
  2. Step 2: Convert to fraction form
    113,121.28/156,275.04 = 74,450.28/x
  3. Step 3: Cross multiply
    113,121.28x = 156,275.04 × 74,450.28
  4. Step 4: Simplify right side
    113,121.28x = 11,634,720,485.01
  5. Step 5: Solve for x
    x = 11,634,720,485.01/113,121.28
  6. Step 6: Final answer
    x = 102,851.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.